Home / 28,502.25-42,698.02-13,721.55

Finding the Fourth Proportional to 28,502.25, 42,698.02 and 13,721.55

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Solution

The fourth proportional to 28,502.25, 42,698.02 and 13,721.55 is: 20,555.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,502.25 : 42,698.02 = 13,721.55 : x
  2. Step 2: Convert to fraction form
    28,502.25/42,698.02 = 13,721.55/x
  3. Step 3: Cross multiply
    28,502.25x = 42,698.02 × 13,721.55
  4. Step 4: Simplify right side
    28,502.25x = 585,883,016.33
  5. Step 5: Solve for x
    x = 585,883,016.33/28,502.25
  6. Step 6: Final answer
    x = 20,555.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.